On Sat, 28 Mar 2015, Wietse Venema wrote: > Postscreen does DNSXL lookups in parallel, and they make take several > seconds to complete, so the occasional delay or lost packet does not > adversely impact postscreen's performance. > > Postscreen database updates must be fast because they are synchronous. > With dynamic DNS, any delay or lost packet must not cause postscreen to > grind to a halt. > > Either one would have to make the Postfix table infrastructure > asynchronous, or one would have to implement a new caching daemon that > completes dynamic DNS updates in the background. proxymap is not such a > program.
I see, it's more complex than I thought. Thanks for the explanation! Best regards, Jozsef - E-mail : [email protected], [email protected] PGP key : http://www.kfki.hu/~kadlec/pgp_public_key.txt Address : Wigner Research Centre for Physics, Hungarian Academy of Sciences H-1525 Budapest 114, POB. 49, Hungary
